Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
stīva, ae, f., a plough-handle, Varr. L. L. 5, § 135 Müll.; Verg. G. 1, 174; Ov. M. 8, 218; id. F. 4, 825; Col. 1, 9, 3; Amm. 15, 4, 3.